yeah, like it! art and music are great, and it has a crypt of the necrodancer vibe in play style.
the random bullet selection on firing is definitely appropriate for the jam theme, but I wonder if the selection could have occurred before firing, so you always know what your next bullet will be, and can base your next move on it. Might have introduced a little more strategy perhaps. Very solid base of something here if you wanted to continue with it.
nice work!